INQUISUR   21779
INSTITUTO DE QUIMICA DEL SUR
Unidad Ejecutora - UE
artículos
Título:
A new automated approach to determine monosodium glutamate in dehydrated broths by using the flow-batch methodology
Autor/es:
CAROLINA C. ACEBAL, MATÍAS INSAUSTI, MARCELO F. PISTONESI, ADRIANA G. LISTA, BEATRIZ S. FERNÁNDEZ BAND
Revista:
TALANTA
Editorial:
ELSEVIER
Referencias:
Año: 2010 vol. 81 p. 116 - 119
ISSN:
0039-9140
Resumen:
The advantages of the flow-batch methodology were exploited to implement a simple system with nephelometric
detection for the determination of monosodium glutamate (MSG) in food samples. The method
is based on the inhibitory effect of the MSG over the crystallization of l-lysine in an isopropanol/acetone
mixture. The calibration curve was prepared on-line. The method was linear over the range of 2.8×10−3
to 1.1×10−2 gL−1 and a detection limit of 9.7×10−5 gL−1 was achieved. It was successfully applied to
determine the MSG concentration in food samples, without a previous treatment. A recovery study was
carried out on real samples and the percentages were between 98 and 106%